This is the
Mocal oil thermostat with its Alan fabricated mounting bracket. This
fits between the top rear engine mounts. The senders for the oil temp
and pressure gauges were drilled and tapped into the housing, the only
place to affix these important senders.
Correct oil flow (see black pen
markings) through the thermostat is vital for it to work properly by
retaining oil circulating Just around the engine. When the oil temperature
reaches approximately 95 deg C it opens and circulates the oil up through
the oil rad.
The small black rubber edge protector
on the right of the bracket is there to stop a wiring harness chafing
against the metal.